ABAP Select data from SAP table /XFT/INV_S_ITEM_TABLE_CONTROL into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP /XFT/INV_S_ITEM_TABLE_CONTROL table and store it within an internal table, including using the newer @DATA inline declaration methods. It also shows you various ways to process this data using ABAP work area, inline declaration or field symbols including executing all the relevant CONVERSION_EXIT routines specific to /XFT/INV_S_ITEM_TABLE_CONTROL. See here for more generic Select statement tips.

Sometimes data within SAP is stored within the database table in a different format to what it is displayed to the user. These input/output conversation FM routines are what translates the data between the two formats.

There is also a full declaration of the /XFT/INV_S_ITEM_TABLE_CONTROL table where each field has a char/string type for you to simply copy and paste. This allows you to use processing that is only available to these field types such as the CONCATENATE statement.

DATA: IT_/XFT/INV_S_ITEM_TABLE_CONTROL TYPE STANDARD TABLE OF /XFT/INV_S_ITEM_TABLE_CONTROL,
      WA_/XFT/INV_S_ITEM_TABLE_CONTROL TYPE /XFT/INV_S_ITEM_TABLE_CONTROL,
      GD_STR TYPE STRING.

DATA: lo_typedescr type REF TO cl_abap_typedescr.
DATA: lv_fieldname type fieldname.

FIELD-SYMBOLS: <FIELD> TYPE any.
FIELD-SYMBOLS: </XFT/INV_S_ITEM_TABLE_CONTROL> TYPE /XFT/INV_S_ITEM_TABLE_CONTROL.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_/XFT/INV_S_ITEM_TABLE_CONTROL.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM /XFT/INV_S_ITEM_TABLE_CONTROL
  INTO TABLE IT_/XFT/INV_S_ITEM_TABLE_CONTROL.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM /XFT/INV_S_ITEM_TABLE_CONTROL
*  INTO TABLE @DATA(IT_/XFT/INV_S_ITEM_TABLE_CONTROL2).
*--Further methods of using ABAP code to  select data from SAP database tables

*You can also declare the header/work area using the in-line DATA declaration method
READ TABLE IT_/XFT/INV_S_ITEM_TABLE_CONTROL INDEX 1 INTO DATA(WA_/XFT/INV_S_ITEM_TABLE_CONTROL2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_/XFT/INV_S_ITEM_TABLE_CONTROL ASSIGNING </XFT/INV_S_ITEM_TABLE_CONTROL>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
</XFT/INV_S_ITEM_TABLE_CONTROL>-MARK = 1.
</XFT/INV_S_ITEM_TABLE_CONTROL>-PROCESS_ID = 1.
</XFT/INV_S_ITEM_TABLE_CONTROL>-GUID = 1.
</XFT/INV_S_ITEM_TABLE_CONTROL>-INVOICE_DOC_ITEM = 1.
</XFT/INV_S_ITEM_TABLE_CONTROL>-PO_NUMBER = 1.

ENDLOOP.

LOOP AT IT_/XFT/INV_S_ITEM_TABLE_CONTROL INTO WA_/XFT/INV_S_ITEM_TABLE_CONTROL.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_/XFT/INV_S_ITEM_TABLE_CONTROL-PO_ITEM, sy-vline,
  WA_/XFT/INV_S_ITEM_TABLE_CONTROL-REF_DOC, sy-vline,
  WA_/XFT/INV_S_ITEM_TABLE_CONTROL-REF_DOC_YEAR, sy-vline,
  WA_/XFT/INV_S_ITEM_TABLE_CONTROL-REF_DOC_IT, sy-vline,
  WA_/XFT/INV_S_ITEM_TABLE_CONTROL-DE_CRE_IND, sy-vline,
  WA_/XFT/INV_S_ITEM_TABLE_CONTROL-TAX_CODE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_/XFT/INV_S_ITEM_TABLE_CONTROL you want to display...

  WRITE:/ sy-uline.
* Aternatively use generic code to Write field values (and NAME) to screen report
  DO.
    ASSIGN COMPONENT sy-index OF STRUCTURE wa_/XFT/INV_S_ITEM_TABLE_CONTROL TO <field>.
    IF sy-subrc <> 0. EXIT. ENDIF.
    WRITE:/ 'Field Value', <field>, sy-vline.
    gd_str = <field> .
    lo_typedescr ?= CL_ABAP_DATADESCR=>DESCRIBE_BY_DATA( <field> ).
    lv_fieldname = lo_typedescr->GET_RELATIVE_NAME( ).
    WRITE:/ 'Field Name', lv_fieldname.
  ENDDO.

  
*Redo loop but convert all fields from internal to out value  
LOOP AT IT_/XFT/INV_S_ITEM_TABLE_CONTROL INTO WA_/XFT/INV_S_ITEM_TABLE_CONTROL.


*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Convert all fields to display/output versions using conversion routines
  PERFORM convert_all_field_values CHANGING wa_EKKO.
	 
ENDLOOP.

  
*&---------------------------------------------------------------------*
*& Form convert_all_field_values
*&---------------------------------------------------------------------*
FORM convert_all_field_values CHANGING p_EKKO LIKE wa_EKKO.
DATA: ld_input(1000) TYPE c, ld_output(1000) TYPE C.

*Conversion exit ALPHA, internal->external for field PO_NUMBER
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_/XFT/INV_S_ITEM_TABLE_CONTROL-PO_NUMBER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/XFT/INV_S_ITEM_TABLE_CONTROL-PO_NUMBER.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field REF_DOC
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_/XFT/INV_S_ITEM_TABLE_CONTROL-REF_DOC
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/XFT/INV_S_ITEM_TABLE_CONTROL-REF_DOC.
WRITE:/ 'New Value:', ld_input.

*Conversion exit GJAHR, internal->external for field REF_DOC_YEAR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_/XFT/INV_S_ITEM_TABLE_CONTROL-REF_DOC_YEAR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/XFT/INV_S_ITEM_TABLE_CONTROL-REF_DOC_YEAR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field PO_UNIT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_/XFT/INV_S_ITEM_TABLE_CONTROL-PO_UNIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/XFT/INV_S_ITEM_TABLE_CONTROL-PO_UNIT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field PO_PR_UOM
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_/XFT/INV_S_ITEM_TABLE_CONTROL-PO_PR_UOM
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/XFT/INV_S_ITEM_TABLE_CONTROL-PO_PR_UOM.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field SHEET_NO
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_/XFT/INV_S_ITEM_TABLE_CONTROL-SHEET_NO
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/XFT/INV_S_ITEM_TABLE_CONTROL-SHEET_NO.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field FREIGHT_VEN
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_/XFT/INV_S_ITEM_TABLE_CONTROL-FREIGHT_VEN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/XFT/INV_S_ITEM_TABLE_CONTROL-FREIGHT_VEN.
WRITE:/ 'New Value:', ld_input.
ENDFORM. 

*&---------------------------------------------------------------------*
*& Form process_as_string_field_values
*&---------------------------------------------------------------------*
FORM process_as_string_field_values CHANGING p_EKKO LIKE wa_EKKO.

TYPES: BEGIN OF T_/XFT/INV_S_ITEM_TABLE_CONTROL_STR, 
MARK TYPE STRING,
PROCESS_ID TYPE STRING,
GUID TYPE STRING,
INVOICE_DOC_ITEM TYPE STRING,
PO_NUMBER TYPE STRING,
PO_ITEM TYPE STRING,
REF_DOC TYPE STRING,
REF_DOC_YEAR TYPE STRING,
REF_DOC_IT TYPE STRING,
DE_CRE_IND TYPE STRING,
TAX_CODE TYPE STRING,
TAXJURCODE TYPE STRING,
ITEM_AMOUNT TYPE STRING,
QUANTITY TYPE STRING,
PO_UNIT TYPE STRING,
PO_UNIT_ISO TYPE STRING,
PO_PR_QNT TYPE STRING,
PO_PR_UOM TYPE STRING,
PO_PR_UOM_ISO TYPE STRING,
COND_TYPE TYPE STRING,
COND_ST_NO TYPE STRING,
COND_COUNT TYPE STRING,
SHEET_NO TYPE STRING,
ITEM_TEXT TYPE STRING,
FINAL_INV TYPE STRING,
SHEET_ITEM TYPE STRING,
GRIR_CLEAR_SRV TYPE STRING,
FREIGHT_VEN TYPE STRING,
CSHDIS_IND TYPE STRING,END OF T_EKKO_STR.
DATA: WA_/XFT/INV_S_ITEM_TABLE_CONTROL_STR type T_EKKO_STR.

DATA: ld_text TYPE string.

LOOP AT IT_EKKO INTO WA_EKKO.
  MOVE-CORRESPONDING wa_EKKO TO WA_EKKO_STR.
  CONCATENATE: sy-vline
WA_/XFT/INV_S_ITEM_TABLE_CONTROL_STR-MARK sy-vline 
WA_/XFT/INV_S_ITEM_TABLE_CONTROL_STR-PROCESS_ID sy-vline 
WA_/XFT/INV_S_ITEM_TABLE_CONTROL_STR-GUID sy-vline 
WA_/XFT/INV_S_ITEM_TABLE_CONTROL_STR-INVOICE_DOC_ITEM sy-vline 
WA_/XFT/INV_S_ITEM_TABLE_CONTROL_STR-PO_NUMBER sy-vline 
WA_/XFT/INV_S_ITEM_TABLE_CONTROL_STR-PO_ITEM sy-vline 
WA_/XFT/INV_S_ITEM_TABLE_CONTROL_STR-REF_DOC sy-vline 
WA_/XFT/INV_S_ITEM_TABLE_CONTROL_STR-REF_DOC_YEAR sy-vline 
WA_/XFT/INV_S_ITEM_TABLE_CONTROL_STR-REF_DOC_IT sy-vline 
WA_/XFT/INV_S_ITEM_TABLE_CONTROL_STR-DE_CRE_IND sy-vline 
WA_/XFT/INV_S_ITEM_TABLE_CONTROL_STR-TAX_CODE sy-vline 
WA_/XFT/INV_S_ITEM_TABLE_CONTROL_STR-TAXJURCODE sy-vline 
WA_/XFT/INV_S_ITEM_TABLE_CONTROL_STR-ITEM_AMOUNT sy-vline 
WA_/XFT/INV_S_ITEM_TABLE_CONTROL_STR-QUANTITY sy-vline 
WA_/XFT/INV_S_ITEM_TABLE_CONTROL_STR-PO_UNIT sy-vline 
WA_/XFT/INV_S_ITEM_TABLE_CONTROL_STR-PO_UNIT_ISO sy-vline 
WA_/XFT/INV_S_ITEM_TABLE_CONTROL_STR-PO_PR_QNT sy-vline 
WA_/XFT/INV_S_ITEM_TABLE_CONTROL_STR-PO_PR_UOM sy-vline 
WA_/XFT/INV_S_ITEM_TABLE_CONTROL_STR-PO_PR_UOM_ISO sy-vline 
WA_/XFT/INV_S_ITEM_TABLE_CONTROL_STR-COND_TYPE sy-vline 
WA_/XFT/INV_S_ITEM_TABLE_CONTROL_STR-COND_ST_NO sy-vline 
WA_/XFT/INV_S_ITEM_TABLE_CONTROL_STR-COND_COUNT sy-vline 
WA_/XFT/INV_S_ITEM_TABLE_CONTROL_STR-SHEET_NO sy-vline 
WA_/XFT/INV_S_ITEM_TABLE_CONTROL_STR-ITEM_TEXT sy-vline 
WA_/XFT/INV_S_ITEM_TABLE_CONTROL_STR-FINAL_INV sy-vline 
WA_/XFT/INV_S_ITEM_TABLE_CONTROL_STR-SHEET_ITEM sy-vline 
WA_/XFT/INV_S_ITEM_TABLE_CONTROL_STR-GRIR_CLEAR_SRV sy-vline 
WA_/XFT/INV_S_ITEM_TABLE_CONTROL_STR-FREIGHT_VEN sy-vline 
WA_/XFT/INV_S_ITEM_TABLE_CONTROL_STR-CSHDIS_IND sy-vline      INTO ld_text SEPARATED BY SPACE.

*Add any further fields from structure WA_EKKO_STR you want to CONCATENATE...
ENDLOOP.
ENDFORM.